Carrier 50VL-A Performance Installation Instructions Manual

Also see for Performance 50VL-A: Owner's information manual Installation instructions Installation instructions Installation instructions

Contents

32Large ChassisTo install the Vertical Economizer on the large chassis perform thefollowing procedure:1. Turn off unit power supply and install lockout tag.ELECTRICAL SHOCK HAZARDFailure to follow this warning could result in personalinjury or death.Before installing or servicing system, always turn off mainpower to system and install lock--out tag. There may bemore than one disconnect switch. Turn off accessory heaterpower switch if applicable.! WARNING2. Remove economizer hood top panel from the return side ofthe unit. See Fig. 25. Keep screws and panel next to theunit.3. Remove red shipping tape that attaches the outside airtemperature (OAT) sensor to the economizer assembly andplace sensor next to the unit.4. Remove horizontal return duct cover panel and cut the wireties that hold the hood divider to the economizer assembly.Slide hood divider off from the two slots holding it in placeand place next to the unit. See Fig. 26.5. Replace horizontal return duct cover panel. Screw in placeensuring all seams are air and watertight.6. Open economizer hood package found on the top skid.Mount OAT sensor to its assigned bracket by screwingtogether with provided two #8 fasteners. Afterwards installOAT sensor to the right side hood panel with the provided#10 screws. See Fig. 27.7. Install the 2 angle filter brackets to the right and left hoodside panels respectively with the #10 screws provided. SeeFig. 28.8. Assemble hood according to Fig. 29 screwing togetherwith provided #10 sheet metal screws.9. Install assembled hood over the economizer opening in thereplacement return chamber panel. See Fig. 30. Screw inplace through pre-punched holes. Make sure all seams areair and watertight.NOTE: The two wires that connect to the outside air temperaturesensor (OAT) should remain accessible.10. Connect the outside air temperature sensor (OAT) to theeconomizer per wiring diagram.OAT SensorFilter AccessPanelHoop TopPanelA09696Fig. 25 -- Economizer Hood Top Panel RemovalHorizontalReturn DuctCover PanelHoodDividerHood Divider(Removed)A09697Fig. 26 -- Horizontal Return Duct Cover Panel and Hood Divider Removal50VL-- A